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Hell Volhard-zelinsky reaction
In presence of Red P and diffused light or Hell Volhard-zelinsky reaction
Carboxylic acid comprising an α-hydrogen react with Cl2 or Br2 in the existence of a small amount of red phosphorus to provide chloro acetic acid. The reaction is termed as Hell Volhard-zelinsky reaction.
The radius of electron in the first excited state of hydrogen atom is: (1) a 0 (2) 4a 0 (3) 2a 0 (4) 8a o
The number of orbitals present in the shell with n= 4 is: (1) 16 (2) 8 (3) 18 (4) 32 Ans: 16
What was the calculated ?H value obtained for the reaction NH3 + HCl –› NH4Cl using the thermodynamic data in your lab procedure? The thermodynamic data is: •?H°f for NH3 (aq) = -
Q. Ca +2 = 20 ppm, Mg +2 = 25 ppm, CO 2 = 30 ppm, HCO - 3 = 150, K + = 10 ppm. Calculate the lime (87% pure) and soda (91% pure) required softening 1 million litt
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